function s1_hello() {
   echo "hello, world!"
}

function s2_tell_who_i_am() {
   whoami
}

function s3_which_distro_do_i_use() {
   cat /etc/os-release | head -n 1   
}

function s4_view_my_cpu_arch() {
   uname -m
}

function s5_show_first_scsi_disk_size() {
	lsblk -l | awk ' /disk/{size=$4; if (size ~ /T/) {gsub(/T/, "", size); print size*1000} else {gsub(/G/ , "", size); print size}}' | head -n 1
}

function s6_show_main_memory_size_in_megabytes() {
   free -m |grep "Mem:" |awk '{print $2}'
}
